Django扩展自定义manage命令

#!/usr/bin/env python
import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "CIServer.settings")
    try:
        from django.core.management import execute_from_command_line
    except ImportError:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and available "
            "on your PATH environment variable? Did you forget to activate a "
            "virtual environment?"
        )
    execute_from_command_line(sys.argv)

def execute_from_command_line(argv=None):
    """
    A simple method that runs a ManagementUtility.
    """
    utility = ManagementUtility(argv)
    utility.execute()

def get_commands():
    """
    Returns a dictionary mapping command names to their callback applications.

    This works by looking for a management.commands package in django.core, and
    in each installed application -- if a commands package exists, all commands
    in that package are registered.

    Core commands are always included. If a settings module has been
    specified, user-defined commands will also be included.

    The dictionary is in the format {command_name: app_name}. Key-value
    pairs from this dictionary can then be used in calls to
    load_command_class(app_name, command_name)

    If a specific version of a command must be loaded (e.g., with the
    startapp command), the instantiated module can be placed in the
    dictionary in place of the application name.

    The dictionary is cached on the first call and reused on subsequent
    calls.
    """
    commands = {name: 'django.core' for name in find_commands(upath(__path__[0]))}

    if not settings.configured:
        return commands

    for app_config in reversed(list(apps.get_app_configs())):
        path = os.path.join(app_config.path, 'management')
        commands.update({name: app_config.name for name in find_commands(path)})

    return commands

def find_commands(management_dir):
    """
    Given a path to a management directory, returns a list of all the command
    names that are available.

    Returns an empty list if no commands are defined.
    """
    command_dir = os.path.join(management_dir, 'commands')
    # Workaround for a Python 3.2 bug with pkgutil.iter_modules
    sys.path_importer_cache.pop(command_dir, None)
    return [name for _, name, is_pkg in pkgutil.iter_modules([npath(command_dir)])
            if not is_pkg and not name.startswith('_')]

def load_command_class(app_name, name):
    """
    Given a command name and an application name, returns the Command
    class instance. All errors raised by the import process
    (ImportError, AttributeError) are allowed to propagate.
    """
    module = import_module('%s.management.commands.%s' % (app_name, name))
    return module.Command()

#-*- coding:utf-8 -*-
from django.core.management.base import BaseCommand, CommandError


class Command(BaseCommand):

    def add_arguments(self, parser):

        parser.add_argument(
            '-n',
            '--name',
            action='store',
            dest='name',
            default='close',
            help='name of author.',
        )

    def handle(self, *args, **options):
        try:
            if options['name']:
                print 'hello world, %s' % options['name']
            
            self.stdout.write(self.style.SUCCESS('命令%s执行成功, 参数为%s' % (__file__, options['name'])))
        except Exception, ex:
            self.stdout.write(self.style.ERROR('命令执行出错'))

python manage.py hello -n kangaroo

hello world, kangaroo
命令hello.py执行成功，参数为kangaroo